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    Using a scanner to obtain x-y positions and other information off a part...

    Dang... I had a real nice post going, then my old system crashed and lost it all. This time I'll keep it shorter. Needed to make one of these. A door rotor latch for my truck. To get all the x-y coordinates, radii, and angles I scanned it... Used AutoCad to scale and trace the profile of the...
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    Parallel Motion Linkage...

    Hi, I know walking beam design is pretty straightforward but recently I worked up a cad drawing to lay out the hole positions and and details required to incorporate James Watt's 4-bar linkage. The image shown is sized for a 1" stroke so scaling up/down should be pretty simple. I show the...
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    The Jim Dandy #6

    I've had this link for more than 10 years now to a unique Stirling engine design that actually has useful power and torque. Maybe some of you have seen this. This guy is from Pescadero, California. I've always meant to try and find/see this machine in person since it's only an hour or two from...
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    New trick I learned today

    Hi, I just wanted to pass this on to you guys. I just stumbled on it and some of you may already know this feature. I was fooling around in AutoCad today just curious about planning out moves on a rotary table by using CAD to rotate a drawing like a rotary table simulation. The drawing I was...
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    A Workout for my HF 3" rotary Table

    I've had an old 1959 9" Craftsman Radial Arm Saw for quite awhile now, but it never had the anti-kick-back device for ripping. I've ripped lot's of boards without it but finally decided to make one. There's probably several ways to go about this, but I wanted to use the rotary table. I broke...
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    3D Printing-FYI

    I received this link via Jameco Electronics since I'm on their mailing list. Thought some of you may find it helpful. Rich
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    Simple tip for tapping in a mill

    I'm sure we've all done tapping in the mill at some point or another. My mill is the X-3 model mill-drill. I've removed two of the three quill levers to gain a little open space. Awhile back I was using the quill to keep the tap handle straight while turning the tap by hand. It dawned on me...
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    An odd source for an extruded "dovetail" substitute

    Hi, Today I had to pull the driver's seat from my daughter's 1999 Honda Accord to change the seat belt clasp. While I was setting the seat on the work bench upside down I noticed the very nice aluminum extrusions Honda uses for the seat rails. In comparison to my 9x20 crosslide dovetail I'd...
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    Using AutoLisp programming and AutoCAD to draw Gears

    Has anyone out there tried to automate gear drawing in 3D? I've been toying with a few routines to draw: Spur gears (internal and external) Helical Gears Miter gears The basic idea so far has been utilizing the concept of "straight tooth" hobbing to generate the tooth profile... Draw the...
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    Home made programs...

    I know Marv Klotz has a web site featuring his programs, they are great and I've used them many times (Thanks Marv!). I too like to dabble in simple programs for the shop. I'm not sure if anyone is interested, but I have a couple of simple programs used to help narrow down the options for...
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    Manual Engraving in 3D

    Hi, I've had this home made pantograph for some time now. I usually only use it to put numbers or letters on something. Awhile back my wife brought home a cast iron acanthus do-dad for a wall ornament. I thought it would make a good experiment to see if I could reproduce it in 3d at a 2:1 scale...
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    Posting Screen Shots

    Hi, I used to write operating manuals awhile ago and I remember using the "ALT-PRINTSCREEN" trick to put a screen shot from an application into say an MS Word document or whatever by pasting the screen shot. Can this be done on message boards such as this? Rich
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    Gear Hob -First effort

    I have a little project under way to make/adapt a mechanical counter to my X axis. Part of the job involves making a couple gears to transfer the revolutions to the counter. I've read a lot about gear hobs including the Hobbynut videos. The cutter is an oddball DP because I already had the 2"...
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    Direct Diameter Readout-9x20 Lathe

    About two years ago, I decided to try out a simple (I mean really simple) idea. It required the following items: A dial and pointer Simple Brackets A Roller and a small pulley Some construction Twine/string A plumb-bob THE DIAL My lathe is a HF 9x20 so the readout dial reads from 0 to 10" (0 to...
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